[INFO] cloning repository https://github.com/krotera/threadpool_fractal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/krotera/threadpool_fractal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrotera%2Fthreadpool_fractal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrotera%2Fthreadpool_fractal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf86431b026790d99340cc995e6464cc9ec0d533
[INFO] testing krotera/threadpool_fractal against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrotera%2Fthreadpool_fractal" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/krotera/threadpool_fractal
[INFO] finished tweaking git repo https://github.com/krotera/threadpool_fractal
[INFO] tweaked toml for git repo https://github.com/krotera/threadpool_fractal written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/krotera/threadpool_fractal on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/krotera/threadpool_fractal already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953
[INFO] running `Command { std: "docker" "start" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling weezl v0.1.3
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling bytemuck v1.4.1
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling gif v0.11.1
[INFO] [stderr]    Compiling png v0.16.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling tiff v0.6.0
[INFO] [stderr]    Compiling image v0.23.12
[INFO] [stderr]    Compiling threadpool_fractal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib/lib.rs:317:21
[INFO] [stdout]     |
[INFO] [stdout] 317 |                 for mut pixel_data in &mut segment {
[INFO] [stdout]     |                     ----^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib/lib.rs:442:17
[INFO] [stdout]     |
[INFO] [stdout] 442 |             for mut pixel_data in &mut row {
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 32.55s
[INFO] running `Command { std: "docker" "inspect" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib/lib.rs:317:21
[INFO] [stdout]     |
[INFO] [stdout] 317 |                 for mut pixel_data in &mut segment {
[INFO] [stdout]     |                     ----^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib/lib.rs:442:17
[INFO] [stdout]     |
[INFO] [stdout] 442 |             for mut pixel_data in &mut row {
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling threadpool_fractal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib/lib.rs:317:21
[INFO] [stdout]     |
[INFO] [stdout] 317 |                 for mut pixel_data in &mut segment {
[INFO] [stdout]     |                     ----^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib/lib.rs:442:17
[INFO] [stdout]     |
[INFO] [stdout] 442 |             for mut pixel_data in &mut row {
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] 
[INFO] [stderr]    --> src/lib/lib.rs:317:21
[INFO] [stdout] running 10 tests
[INFO] [stderr]     |
[INFO] [stdout] test colors::test_blend_color_channel ... ok
[INFO] [stderr] 317 |                 for mut pixel_data in &mut segment {
[INFO] [stdout] test colors::test_blend_colors ... ok
[INFO] [stderr]     |                     ----^^^^^^^^^^
[INFO] [stdout] test test_divide_image_into_rows ... ok
[INFO] [stderr]     |                     |
[INFO] [stdout] test test_divide_image_into_segments ... ok
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stdout] test test_parse_complex ... ok
[INFO] [stderr]     |
[INFO] [stdout] test test_parse_pair ... ok
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] test colors::test_iterations_to_color_even_gradient ... FAILED
[INFO] [stderr] 
[INFO] [stdout] test colors::test_iterations_to_color_grayscale_gradient ... FAILED
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] test colors::test_iterations_to_color_odd_gradient ... FAILED
[INFO] [stderr]    --> src/lib/lib.rs:442:17
[INFO] [stdout] test mandelbrot::test_pixel_to_complex_point ... ok
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 442 |             for mut pixel_data in &mut row {
[INFO] [stdout] failures:
[INFO] [stderr]     |                 ----^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]     |                 |
[INFO] [stdout] ---- colors::test_iterations_to_color_even_gradient stdout ----
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] thread 'colors::test_iterations_to_color_even_gradient' (1068) panicked at src/lib/colors.rs:402:10:
[INFO] [stderr] warning: `threadpool_fractal` (lib) generated 2 warnings (run `cargo fix --lib -p threadpool_fractal` to apply 2 suggestions)
[INFO] [stdout] error writing to image file: IoError(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stderr] warning: `threadpool_fractal` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stdout] stack backtrace:
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.06s
[INFO] [stdout]    0:     0x640637710d71 - <<std[104cf6e2632825ea]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[7c831bd917ebf35f]::fmt::Display>::fmt
[INFO] [stderr]      Running unittests src/lib/lib.rs (/opt/rustwide/target/release/deps/threadpool_fractal-2fbca176f8cb7d43)
[INFO] [stdout]    1:     0x64063772714a - core[7c831bd917ebf35f]::fmt::write
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout]    2:     0x6406377153bc - <alloc[2fdc3f7464fcf288]::vec::Vec<u8> as core[7c831bd917ebf35f]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x6406376ed2a6 - std[104cf6e2632825ea]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x640637709489 - std[104cf6e2632825ea]::panicking::default_hook
[INFO] [stdout]    5:     0x64063767b070 - test[73009c9f9aebf890]::test_main_inner::<test[73009c9f9aebf890]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x640637709642 - std[104cf6e2632825ea]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x6406376ed352 - std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x6406376e5cc9 - std[104cf6e2632825ea]::sys::backtrace::__rust_end_short_backtrace::<std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x6406376edf4d - __rustc[b0d56fa5b193ad05]::rust_begin_unwind
[INFO] [stdout]   10:     0x64063772787c - core[7c831bd917ebf35f]::panicking::panic_fmt
[INFO] [stdout]   11:     0x640637727652 - core[7c831bd917ebf35f]::result::unwrap_failed
[INFO] [stdout]   12:     0x64063766b331 - threadpool_fractal[33def88a222aa6b9]::colors::write_test_gradient
[INFO] [stdout]   13:     0x64063766b9b8 - threadpool_fractal[33def88a222aa6b9]::colors::test_iterations_to_color_even_gradient
[INFO] [stdout]   14:     0x64063766e2c9 - <threadpool_fractal[33def88a222aa6b9]::colors::test_iterations_to_color_even_gradient::{closure#0} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   15:     0x64063766e35b - test[73009c9f9aebf890]::__rust_begin_short_backtrace::<core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>, fn() -> core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>>
[INFO] [stdout]   16:     0x64063767b9c5 - test[73009c9f9aebf890]::run_test::{closure#0}
[INFO] [stdout]   17:     0x640637674d84 - std[104cf6e2632825ea]::sys::backtrace::__rust_begin_short_backtrace::<test[73009c9f9aebf890]::run_test::{closure#1}, ()>
[INFO] [stdout]   18:     0x64063767eb22 - <std[104cf6e2632825ea]::thread::lifecycle::spawn_unchecked<test[73009c9f9aebf890]::run_test::{closure#1}, ()>::{closure#1} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   19:     0x640637710649 - <std[104cf6e2632825ea]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   20:     0x7e358fe3b07a - <unknown>
[INFO] [stdout]   21:     0x7e358fece534 - clone
[INFO] [stdout]   22:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- colors::test_iterations_to_color_grayscale_gradient stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'colors::test_iterations_to_color_grayscale_gradient' (1069) panicked at src/lib/colors.rs:402:10:
[INFO] [stdout] error writing to image file: IoError(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x640637710d71 - <<std[104cf6e2632825ea]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[7c831bd917ebf35f]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x64063772714a - core[7c831bd917ebf35f]::fmt::write
[INFO] [stdout]    2:     0x6406377153bc - <alloc[2fdc3f7464fcf288]::vec::Vec<u8> as core[7c831bd917ebf35f]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x6406376ed2a6 - std[104cf6e2632825ea]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x640637709489 - std[104cf6e2632825ea]::panicking::default_hook
[INFO] [stdout]    5:     0x64063767b070 - test[73009c9f9aebf890]::test_main_inner::<test[73009c9f9aebf890]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x640637709642 - std[104cf6e2632825ea]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x6406376ed352 - std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x6406376e5cc9 - std[104cf6e2632825ea]::sys::backtrace::__rust_end_short_backtrace::<std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x6406376edf4d - __rustc[b0d56fa5b193ad05]::rust_begin_unwind
[INFO] [stdout]   10:     0x64063772787c - core[7c831bd917ebf35f]::panicking::panic_fmt
[INFO] [stdout]   11:     0x640637727652 - core[7c831bd917ebf35f]::result::unwrap_failed
[INFO] [stdout]   12:     0x64063766b331 - threadpool_fractal[33def88a222aa6b9]::colors::write_test_gradient
[INFO] [stdout]   13:     0x64063766bcc5 - threadpool_fractal[33def88a222aa6b9]::colors::test_iterations_to_color_grayscale_gradient
[INFO] [stdout]   14:     0x64063766e2e9 - <threadpool_fractal[33def88a222aa6b9]::colors::test_iterations_to_color_grayscale_gradient::{closure#0} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   15:     0x64063766e35b - test[73009c9f9aebf890]::__rust_begin_short_backtrace::<core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>, fn() -> core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>>
[INFO] [stdout]   16:     0x64063767b9c5 - test[73009c9f9aebf890]::run_test::{closure#0}
[INFO] [stdout]   17:     0x640637674d84 - std[104cf6e2632825ea]::sys::backtrace::__rust_begin_short_backtrace::<test[73009c9f9aebf890]::run_test::{closure#1}, ()>
[INFO] [stdout]   18:     0x64063767eb22 - <std[104cf6e2632825ea]::thread::lifecycle::spawn_unchecked<test[73009c9f9aebf890]::run_test::{closure#1}, ()>::{closure#1} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   19:     0x640637710649 - <std[104cf6e2632825ea]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   20:     0x7e358fe3b07a - <unknown>
[INFO] [stdout]   21:     0x7e358fece534 - clone
[INFO] [stdout]   22:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- colors::test_iterations_to_color_odd_gradient stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'colors::test_iterations_to_color_odd_gradient' (1070) panicked at src/lib/colors.rs:402:10:
[INFO] [stdout] error writing to image file: IoError(Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" })
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x640637710d71 - <<std[104cf6e2632825ea]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[7c831bd917ebf35f]::fmt::Display>::fmt
[INFO] [stdout]    1:     0x64063772714a - core[7c831bd917ebf35f]::fmt::write
[INFO] [stdout]    2:     0x6406377153bc - <alloc[2fdc3f7464fcf288]::vec::Vec<u8> as core[7c831bd917ebf35f]::io::write::Write>::write_fmt
[INFO] [stdout]    3:     0x6406376ed2a6 - std[104cf6e2632825ea]::panicking::default_hook::{closure#0}
[INFO] [stdout]    4:     0x640637709489 - std[104cf6e2632825ea]::panicking::default_hook
[INFO] [stdout]    5:     0x64063767b070 - test[73009c9f9aebf890]::test_main_inner::<test[73009c9f9aebf890]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]    6:     0x640637709642 - std[104cf6e2632825ea]::panicking::panic_with_hook
[INFO] [stdout]    7:     0x6406376ed352 - std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}
[INFO] [stdout]    8:     0x6406376e5cc9 - std[104cf6e2632825ea]::sys::backtrace::__rust_end_short_backtrace::<std[104cf6e2632825ea]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]    9:     0x6406376edf4d - __rustc[b0d56fa5b193ad05]::rust_begin_unwind
[INFO] [stdout]   10:     0x64063772787c - core[7c831bd917ebf35f]::panicking::panic_fmt
[INFO] [stdout]   11:     0x640637727652 - core[7c831bd917ebf35f]::result::unwrap_failed
[INFO] [stdout]   12:     0x64063766b331 - threadpool_fractal[33def88a222aa6b9]::colors::write_test_gradient
[INFO] [stdout]   13:     0x64063766b5b8 - threadpool_fractal[33def88a222aa6b9]::colors::test_iterations_to_color_odd_gradient
[INFO] [stdout]   14:     0x64063766e2a9 - <threadpool_fractal[33def88a222aa6b9]::colors::test_iterations_to_color_odd_gradient::{closure#0} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   15:     0x64063766e35b - test[73009c9f9aebf890]::__rust_begin_short_backtrace::<core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>, fn() -> core[7c831bd917ebf35f]::result::Result<(), alloc[2fdc3f7464fcf288]::string::String>>
[INFO] [stdout]   16:     0x64063767b9c5 - test[73009c9f9aebf890]::run_test::{closure#0}
[INFO] [stdout]   17:     0x640637674d84 - std[104cf6e2632825ea]::sys::backtrace::__rust_begin_short_backtrace::<test[73009c9f9aebf890]::run_test::{closure#1}, ()>
[INFO] [stdout]   18:     0x64063767eb22 - <std[104cf6e2632825ea]::thread::lifecycle::spawn_unchecked<test[73009c9f9aebf890]::run_test::{closure#1}, ()>::{closure#1} as core[7c831bd917ebf35f]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]   19:     0x640637710649 - <std[104cf6e2632825ea]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]   20:     0x7e358fe3b07a - <unknown>
[INFO] [stdout]   21:     0x7e358fece534 - clone
[INFO] [stdout]   22:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     colors::test_iterations_to_color_even_gradient
[INFO] [stdout]     colors::test_iterations_to_color_grayscale_gradient
[INFO] [stdout]     colors::test_iterations_to_color_odd_gradient
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 7 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953", kill_on_drop: false }`
[INFO] [stdout] c985526f2f9efd7ff8b9b6d8036c6e9fdf464583929512fb107aa6d94c3a6953
